1. 動詞
   alert過去式與過去分詞:
   及物動詞:
   向...(人)發出警報
   使...(人)警覺
   使...(人)警惕
   使...(人)注意
   給...(人)打草驚蛇
   通知...(人)
   通知...(船隻、軍隊，等)待命
   alerted ...(a: 人) to ...(b: 需注意的事等):
   

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   同義字詞
   advise,caution,forewarn,wake,warn
   

例句

1. Be alerted and have your weapons drawn.
2. The authorities are alerted if necessary .
3. In none of those cases were residents alerted .
4. We were alerted of a torpedo attack on the ship.
5. He then alerted the down line either side of him.
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